Dump-car.



N0. 780,759. PATENTED JAN. 24, 1905. v

S. OTIS.

DUMP GAIL. APPLICATION TILED JUNE 1a, 1903.

4 BHEETSBHBBT 1.

fla 2 ?02? I Qs'perzcer 05:3,

PATENTED JAN. 24, 1905.. s. ons. DUMP GAR.

APPLICATION FILED JUNE 18, 1903.

4 SHEETS-SKIIT 2.

fi===== mma( No. 780,759. PATENTED JAN. 24, 1905.

s. OTIS;

DUMP GAR.

APPLICATION FILED JUNE 18', 1903.

(SHEETS BHBET O O O O O O O O O 5 O O O O O O O O O O O &

- j zzvz Gfpgzzcer 02 I No. 780,759. ,PATENTED'JAN. 24, 1905.

DUMP GAR. I APPLICATION FILED JUNE 19, 1903.,

4 SHEETS-SHEET 4.

jgyd

UNITE-n c STATES Patented January 24, 1905.

PATENT QFFICE.

SPENCER OTIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO'NATIONAL COAL DUMP-CAR COMPANY, OF RAPID CITY, SOUTH DAKOTA, A CORPO- RATION OF SOUTH DAKOTA.

DUMP-CAR. an In a SPECIFICATION forming part of Letters Patent No. 780,759, dated January 24, 1905.

' Application filed June 18,1903. SerialNo. 162,002.

To all whom it may concern:

Be it known that I, SPENCER OTIS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dump-Cars, of which the following is a specification. i

This invention relates to that class of freightcars having a supporting-frame portion with upwardly-extending side and end boards; and it relates more particularly to the parts which go to form a drop-bottom portion therefor with the means for opening and closing such drop-bottom portion, as will more fully hereinafter appear.

The principal object of this invention is to provide an efficient drop-bottom dump-car with simple mechanism for opening and closing the same.

Other objects of the invention will appear from an examination of the drawings and the following description and claims. I

The invention consists principally in a car of this type in which there are'combined a supporting-frame portion, a drop-bottom portion therefor formed of a plurality of swinging sections pivotally secured thereto at each side of the longitudinal center of the car, a movable bar for and in engagement with each of said swinging sections, and means reciprocating said bar mechanism to open and close said sections, substantially as described.

The invention consists, further, in the features, combinations, and details of oonstruction hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical cross-sectional elevation of one type of car as it appears when constructed in accordance with these improvements; Fig. 2, a plan detail taken on the irregular lines 2, 2,

and 2 ofjFig. 1; Fig. 3, an end elevation of an end of the car; Fig. 4, a parti-sectional elevation taken on line 4: of Fig. 1; Fig. 5, a plan detail taken on line 5 of Fig. 1; and Fig. 6 a sectional detail in elevation, taken on line 6 of Fig. 8.

In illustrating and describing these improvements I have chosen a preferred type of In constructing a car in accordance with these improvements 1 make a supportingframework having a plurality of centersills at extending longitudinally of the car from end to end and on which are laid a plurality of transverse deck-beams Z), which extend entirely across the car from side to side. This structure dispenses with the usual draft-tima plurality of swinging sections d is provided and pivotally secured to the supporting-framework of the car at their inner edges and at each side of the longitudinal center, which in connection with the central apex portion 0 serves to discharge a load of bulky freight whenever occasion requires.

The drawings show the superstructure of the car as provided with side-boards f and end-boards 9, held in position by means of the side stakes h and end posts ?l, and may or may not be provided with the straps j, as required by different circumstances and conditions. To open and close the drop-bottom portion whenever desirable or necessary, a plurality of rack-bars is provided and supported partially upon the pinion mechanism Z and between such mechanism and idler-rolls m, both of which parts arerotatably mounted in brackets a, that are secured to the sup porting-framework of the car. The forward 'part of these rack-bars is provided at or near each lateral edge with antifrictionwheels which engage with metallic Z-bars g on the bers and provides for a car which may be under side of each swinging section, so that as the rack-bars are reciproeated the antifriction-rolls bearing against the Z-bar tracks of the swinging sections will act to close such swinging sections, as shown to the left of Fig. 1, or permit them to be opened, as shown to the right of such figure. To support such rack-bars in position, the forward portions are preferably provided with shafts or rods 0*, though they may be formed or cast integral with said rack-bars, so that the lateral edges of said bars or the ends of the rods engage with supporting-tracks t, arranged in the side faces of the transverse deckbeams, all of which, as above suggested, acts to support the forward part of the reciprocating rack-bars.

The pinions which reciprocate the rack-bars are mounted upon shafts a, the ends of which project from the end sills of the car, as shown particularly in Figs. 3 and 6, and are squared, as therein shown, to receive the end of a socket wrench or key by which such shafts and the spur-pinions are rotated. The ends of these shafts are provided with star-wheels c and 10, with the first of which a pawl or pawls 00 may engage to permit the shafts to be rotated in either direction, while with the other a spring-pressed click y of an operating-lever 2 may engage, all of which permits the shafts to be wound or rotated in the desired direction.

I claim 1. In acar of the class described, the combination of a supporting-frame portion, a dropbottom therefor formed of a plurality of swinging sections pivotally secured thereto, a reciprocating rack-bar for and in engagement with each swinging section, and pinion mechanism for reciprocating said rack-bar and thereby opening and closing the swinging sections, substantially as described.

2. In a car of the class described, the combination of a supporting-framework provided with a drop-bottom formed of a plurality of swinging sections pivotally secured thereto at each side of the longitudinal center, a reciprocating rack-bar having a bearing portion at each forward lateral edge in the framework of the car and contacting the under side of each swinging section, and pinion mechanism for reciprocating said bar, substantially as described.

3. In a car of the class described, the combination of a supporting-framework provided with transverse beams, a drop-bottom therefor formed of a plurality of swinging sections pivotally secured to the framework at each side of the longitudinal center, track mechanism supported in the supporting-framework of the car, a movable rack-bar having the forward lateral edges thereof running in the tracks on the supporting-framework and contacting the under surface of each swinging section, and pinion mechanism for reciprocating said rack-bars and thereby opening and closing the swinging sections, substantially as described.

4. In a car of the class described, the combination of a supporting-framework provided with a plurality of transverse declvbeams, a drop-bottom portion formed of a plurality of swinging sections pivotally secured at their inner edges to the supporting-framework at each side of the longitudinal center, a rackbar for each and every swinging section provided with projections at its forward lateral edges and antifriction-rollers thereon contacting the under portion of each swinging section, pinion mechanism for each rack-bar to reciprocate the same, and track mechanism on the deck-beams engaging the forward lateral edges of the rack-bar so as to keep the same in contact with the under portion of the swinging sections to open and close the same, substantially as described.

5. In a car of the class described, the combination of a supporting-framework provided with a plurality of transverse deck-beams, a drop-bottom for such car formed of a plurality of swinging sections pivotally secured to the supporting framework between the deckbeams and at each side of the longitudinal center of the car, track mechanism on the under surface of each swinging section, a rack bar movablymounted in the supporting-framcwork of the car and provided at its forward portion with antifriction-wheels engaging the tracks on the under surface of the swinging sections, and pinion mechanism for reciproeating such racks to open and close the swinging sections, substantially as described.

6. In a car of the class described, the eo1nbination of a supporting-framework provided with a plurality of transverse deck-beams, a drop-bottom for such car formed of a plurality of swinging sections pivotally secured to the supporting framework between the deckbeams and at each side of the longitudinal center of the car, track mechanism on the under surface of each swinging section, a rackbar movably mounted in the supportingframework of the car and provided at its forward portion with antifriction-wheels engaging the tracks on the under surface of the swinging sections, pinion mechanism for reciprocating such racks to open and close the swinging sections, roll mechanism between which and the pinion mechanism the rack-bars are movably mounted and held in position, and track mechanism secured to the transverse deck-beams for holding the forward per tion of the rack-bars in operative position, sub stantially as described.

7. In a car of the class described, the combination of a supportirig-framework formed of a plurality of longitudinal center sills, a plurality of transverse deck-beams laid on the center sills and extending entirely across the car, floorwork arranged at the u per part of the transverse deck-beams, a pin rality of doors forming the dumping-bottom portion of such car, and means for operating such dumpingdoors, substantially as described.

8. In a car of the class described, the cornbrnation of a plurality of center sills extending continuously from end to end of the car, a plurality of deck-beams laid thereon, extending continuously across the car from side to side. a floor portion at the upper part of the deck-beams, sides frames mounted upon the outer ends of and supported by such deckbeams, a dumping-bottom portion formed of a plurality of swinging sections, and means for operating such swinging sections, substantially as described.

9. In a car of the class described, the combination of a supporting-framework provided with a plurality of center sills extending longitudinally of the car from end to end, a plurality of transverse deck-beams laid on the upper part of such center sill and extending entirely across the car from side to side thereof, a drop-bottom or floor portion formed of a plurality of swinging sections pivotally secured to the supporting-framework of the car at each side of the longitudinal center and at or near the upper part of and between the transverse deck-beams, metal bars secured to Witnesses: THOMAS FRA-NoIs SHERIDAN,

HARRY IRWIN ORoMER. 

